﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace 调用类成员
{
    class Class1
    {
        static void Main(string[] args)
        {
            Book book = new Book();

            book.Id = 12;

            book.Title = "《老人与海》";

            book.Price = 88;

            book.PrintBookInfo();

        }
    }
}
